Valve



Get. 16, 1928.

C. B. DRAKE VALVE 2 Sheet-Sheet Filed Oct. 11, 1926 t n w n Oct. 16,192.8.

C. B. DRAKE VALVE Filed Oct. 11, 1926 2 Sheets-Sheet 2 auwntoz:

/Zmd/ /3.

Patented Oct. 16, 1928.

PATENT OFFICE.

CHARLES BRITTAIN DRAKE, OF NOB/FOLK, VIRGINIA.

VALVE.

' Application filed October 11, 1926. SerialNo. 140,929.

My invention relates to new and useful improvements in valves and moreparticularly to a thermostatically controlled valve adapted for use withcarburetors for internal combustion engines for regulating the supply offuel to the intake manifold.

The principal object of the invent-ion resides in the provision of anovel construction wherein the thermostatic member is connected directlyto the valve stem and in which the valve stem is adapted to havesufiicient movement relative to the thermostatic memher and the bushingthrough which it e5:-

. tends so that theend of the stem may properly engage in the valveseat.

' A further object of the invention cons sts 1n the provision of novelmeans for conducting heat to the thermostatic member whereby the valveis adjusted.

With the above and other objects in view I will now proceed to describethe preferred embodiments of the invention'but it will be understoodthat such changes may he made as will fall within the scope of theappended claims. I

In the drawings:

9 Fig. 1 is an elevation, with parts broken away, showing the manner ofconnecting my improved form of valve to the engine car bureter andassociated parts.

Fig. 2 is a longitudinal vertical section through the valve with partsshown in elevation.

Fig. 3 is a horizontal section on theline :u-a of Fig. 2 looking in thedirection ol the arrows, and

Fig. t is a transverse vertical section on the line y y of Fig. 3. v j JIt is a well known fact that in the'use of internal combustion enginesthat it isdesirable in initially starting to use a relatively richmixture and then when the engine has been running a short time to feed aleaner mixture. lVith my improved form of valve the mixture isautomatically regulated byjthe heat of the engine, the richness of themixture being reduced after the engine has be come heated.

In the drawings the numeral 1 indicates purpose which will be laterdescribed. lower end of the valve stem is po nted as of the carburetor.

in the top of the carburetor. ne bushing 4 is provided at the top withthe interiorly threaded opening 5 into which is threaded the sleeve orbushing 6, said sleeve or bushing having the flange 7 formedintermediate its ends. A lock nutS is received upon the sleeve orbushing 6 and is adapted to engage the upper end of the bushing 4 asshown more particularly in Fig. 2 of the drawings.

A plate 9 is adapted to 'be'received upon. the flange 7, said platehaving an opening 10. through which the upper end otthe sleeve orbushing 6 extends, the opening being of such a diameter as to allowlongitudinal movement of the plate relative to the sleeve or bushing.One end of the plate 9 is bentto form the eyes 11 and the opposite endis bent upwardly to form the extension 12 more particularly illustratedin Fig. 2. A leaf spring 13 engages the upper face of the plate 9, beingprovided with a central opening through which the upper end 01" thesleeve or bushing 6 extends, and a nut 14 is received on the upperthreaded end oi the sleeve or bushing 6 and engages the upper surface ofthe spring. The spring normally'holds the plate 9 in tight engagementwith the flange 7 and holds the nut 14 inits adjusted positions. 7

The thermostatic member is shown at 15 and has one eudbent to form theextension 16 engaging the underside of the plate 9. Ascrew 17 or othersuitable fastener extends through the extension 16 for securing the sameto the plate 9. The opposite end of the member 15 is forked as shown at18 and engages in the groove 19 formed adjacent' the upper end of thevalve stem 20. The groove 19 is provided with the upper and lowerbeveled surfaces 21 and 22 :Eor' a The shown at 23 to engage in thevalve seat- 3 H p A groove 2% formed intermediate the ends of thevalvestem 20 and a ring 25 is received in said groove and adapted toengage the lower end ot the sleeve or'bushing 6 to limit the upwardmovement of the valve stem. The longitudinally extending bore of thesleeve or bushing 6 isotslightly greater diameter than that of the valvestem to cooperate with the beveled surfaces 21 and 22 of the groove 19to allow the lower or pointed end of the stem to swing slightly in anydirection whereby it will properly engage the seat 3.

For enclosing the thermostatic member I provide the cover 26 which ishingedly connected to the plate 9 by passing the lower end of theconductor rod 27 through the eye 11 of the plate 9 and the sides of thecover. The upper end of the conductor rod 27 is secured to the vaporizerl by means of the bolt 28 or other suitable means. The free end of thecover 26 will engage the upwardly extending portion 12 ot the plate 9and be held in its closed position by fric tional engagement. Anupwardly extending projection 29 is struck from the plate 9 and extendsinto the notch 30 termed in one end of the spring 13. This allows formovement of the spring longitudinally when the nut M- is adjusted butprevents sidewise movement of the spring relative to the plate.

From the above detailed description it is thought that the constructionof my improved form of valve will be clearly understood. Particularattention is directed to the fact that the thermostatic member isconnected directly to the valve stem and by having the valve stem ofless diameter than the bushings through which it passes and by providingthe beveled surtacesQl and 22 for the groove 19 in which the tor-liedend of the thermostatic member en 'a 'es the lower or pointed end of thevalve stem may swing slightly in any direction so that it will properlyengage the seat 3. In certain forms of carburetors with which my valvewill be used there is not precision construction and there might not bean exact aligning of the valve stem and valve seat. By allowing for thedescribed movement of the lower end of the valve stem the same mayproperly engage the valve seat. 'When the engine is cold the pointed endof the valve stem will be positioned away from the valve seat 3 to allowfor a relatively rich mixture of fuel; As the engine becomes heated heatis conducted through the conductor rod 27 to the thermostatic member 15and as the same becomes heated the valve stem is lowered so that thepointed end otthe valve stem Wlll be nearer the seat 3 and reduce therichness ot the mixture. Heat will also be conducted through the valvestemto aid in the upper surface of the nut.

Having fully described my invention what I claim as new and desire tosecure by Letters Patent 1s:

1. A valve of the character described ineluding a sleeve having a flangeformed thereoma plate adapted to be received upon said flange, a valvestem slidable relative to the sleeve, and a thermostatic memberconnected to the plate and to the valve stem.

2. A valve of the character described including a sleeve having a flangeformed thereon, a plate adapted to be received upon said flan e, meansfor holding the plate in engagement with the flange, a valve stemslidable relative to the sleeve, and a thermostatic member connected tothe plate and to the valve stem.

3. A valve oi the character described including a sleeve having a flangeformed thereon, a plate adapted to be received upon the flange, meansfor holding the plate inengagement with the flange, a valve stemslidable through the sleeve and having a circumt'erentially extendinggroove,,and a thermostatic member having one end secured to the plate,the opposite end of the member being forked for engagement in thegroove.

4. A valve 0 1 the character described including a sleeve havmg a flangeformed thereon, a plate adapted to be received upon the flange, avalve-stem slidable relativeto the sleeve, a thermostatic memberconnected to the plate and to the valve stem, and means carried by thesleeve and adapted to be engaged by the thermostatic member for limitmgthe downward movement of thestem; 5. A valve ot the character describedin-' cluding a sleeve having a flange formed thereon, a plate adapted tobe received upon the flange, a valve stem slidable relative to, thesleeve, a thermostatlc member connected" to the plate and to the valvestem, and adustable means carried by the sleeve and adapted to beengaged by the thermostatic member for limiting the downward move:

ment ofthe stem.

6. A valve of the character described including a sleeve having a flangeformed thereon, a plate adapted to be received upon the flange, a valvestem slidable relative to the'sleeve, a thermostatic member connected tothe plate and to thevalve stem, andan adjustable nut carried by thesleeve and adapt ed to be engaged by the thermostatic member forlimiting the downward. movement of the stem.

7. A valve of the character described including a body portion, a valvestem slidable through the body, a thermostatic member connected to thebody and to the valve stem,

and adjustable means carried by the body and adapted to be engaged bythe thermostat for limiting the downward movement of the stem.

signature.

* CHARLES BRITTAIN DRAKE.

. In testimonywhereof I hereunto afiiX my

